Home / 4,815.81-6,647.85-2,928

Finding the Fourth Proportional to 4,815.81, 6,647.85 and 2,928

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Solution

The fourth proportional to 4,815.81, 6,647.85 and 2,928 is: 4,041.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.81 : 6,647.85 = 2,928 : x
  2. Step 2: Convert to fraction form
    4,815.81/6,647.85 = 2,928/x
  3. Step 3: Cross multiply
    4,815.81x = 6,647.85 × 2,928
  4. Step 4: Simplify right side
    4,815.81x = 19,464,904.80
  5. Step 5: Solve for x
    x = 19,464,904.80/4,815.81
  6. Step 6: Final answer
    x = 4,041.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.